I think it would take more time and technology to fake the entire sequence of events leading up to the Apollo project. The entire launch (witnessed by thousands) the television sequence and the physical evidence presented would just take too much time and expense to fake it.
So the point is, why blow so much time, money, manpower, construction and production on a faked event.
I bet the same people who believe the moon landing was staged are the same people who think Elvis is still alive.